IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v251y2022ics0360544222008337.html
   My bibliography  Save this article

Physicochemical structure, combustion characteristics and SiO2 properties of entrained flow gasification ash

Author

Listed:
  • Li, Jiawei
  • Fan, Subo
  • Zhang, Xuyang
  • Chen, Zhichao
  • Qiao, Yanyu
  • Yuan, Zhenhua
  • Zeng, Lingyan
  • Li, Zhengqi

Abstract

During the gasification process of coal, fine ash (FA) and coarse slag (CS) solid waste are produced, which contain a large amount of residual carbon and ash (mainly SiO2), resulting in energy waste and environmental pollution. Therefore the main goal of this research is to recover the wasted energy from FA and CS. The investigation of the physicochemical structure, combustion characteristics and SiO2 properties of entrained flow gasification ash (EFGA) is an important basis for the valorization of EFGA. The physicochemical, combustion characteristics and SiO2 properties of EFGA in a entrained flow bed of 112,000 Nm3/h gas-forming capacity were investigated, showing that FA and CS undergo different gasification processes, with FA having a more developed pore structure and high specific surface area. FA and CS have different degrees of graphitization, with defects or heteroatoms in FA causing a scattered carbon layer structure with an irregular graphitic carbon crystal structure, and organic molecular functional group fragments forming an indeterminate structure and active sites. The organic molecule functional group fragments constitute an indeterminate structure and active sites. Kinetic analysis shows that the influence of chemical structure on the combustion characteristics of EFGA is higher than that of physical structure. Compared to CS, FA has fewer active sites and a small number of oxygen-containing functional groups, resulting in a weaker combustion reactivity of FA. The combustion activity of EFGA is lower than that of circulating fluidized bed gasification ash and anthracite, making it difficult to be eliminated by direct combustion, although co-combustion is feasible. The specific surface area of SiO2 prepared by EFGA after acid treatment and calcination is small (<39.7086 m2/g), SiO2 exists as crystals and the elemental silicon exists mainly in the form of Si–O, O–Si–O and hydrated silicon dioxide Si–O2-nH2O, which can be used as a raw material for the preparation of silica.

Suggested Citation

  • Li, Jiawei & Fan, Subo & Zhang, Xuyang & Chen, Zhichao & Qiao, Yanyu & Yuan, Zhenhua & Zeng, Lingyan & Li, Zhengqi, 2022. "Physicochemical structure, combustion characteristics and SiO2 properties of entrained flow gasification ash," Energy, Elsevier, vol. 251(C).
    • Handle: RePEc:eee:energy:v:251:y:2022:i:c:s0360544222008337
    DOI: 10.1016/j.energy.2022.123930
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544222008337
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2022.123930?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Atimtay, Aysel & Yurdakul, Sema, 2020. "Combustion and Co-Combustion characteristics of torrefied poultry litter with lignite," Renewable Energy, Elsevier, vol. 148(C), pages 1292-1301.
    2. Yurdakul, Sema, 2016. "Determination of co-combustion properties and thermal kinetics of poultry litter/coal blends using thermogravimetry," Renewable Energy, Elsevier, vol. 89(C), pages 215-223.
    3. Yuan, Xinsong & He, Tao & Cao, Hongliang & Yuan, Qiaoxia, 2017. "Cattle manure pyrolysis process: Kinetic and thermodynamic analysis with isoconversional methods," Renewable Energy, Elsevier, vol. 107(C), pages 489-496.
    4. Xu, Jun & Tang, Hao & Su, Sheng & Liu, Jiawei & Xu, Kai & Qian, Kun & Wang, Yi & Zhou, Yingbiao & Hu, Song & Zhang, Anchao & Xiang, Jun, 2018. "A study of the relationships between coal structures and combustion characteristics: The insights from micro-Raman spectroscopy based on 32 kinds of Chinese coals," Applied Energy, Elsevier, vol. 212(C), pages 46-56.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Wang, Wenyu & Li, Wei & Ren, Qiangqiang & Lyu, Qinggang, 2024. "Experimental study on thermal modification characteristics of entrained-flow gasified fine ash using circulating fluidized bed," Energy, Elsevier, vol. 293(C).
    2. Ren, Liang & Gong, Yan & Wang, Xingjun & Guo, Qinghua & Yu, Guangsuo, 2023. "Study on recovery of residual carbon from coal gasification fine slag and the influence of oxidation on its characteristics," Energy, Elsevier, vol. 279(C).

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Gürel, Barış & Kurtuluş, Karani & Yurdakul, Sema & Karaca Dolgun, Gülşah & Akman, Remzi & Önür, Muhammet Enes & Varol, Murat & Keçebaş, Ali & Gürbüz, Habib, 2024. "Combustion of chicken manure and Turkish lignite mixtures in a circulating fluidized bed," Renewable and Sustainable Energy Reviews, Elsevier, vol. 189(PA).
    2. Gao, Mingqiang & Cheng, Cheng & Miao, Zhenyong & Wan, Keji & He, Qiongqiong, 2023. "Physicochemical properties, combustion kinetics and thermodynamics of oxidized lignite," Energy, Elsevier, vol. 268(C).
    3. Li, Fenghai & Zhao, Chaoyue & Guo, Qianqian & Li, Yang & Fan, Hongli & Guo, Mingxi & Wu, Lishun & Huang, Jiejie & Fang, Yitian, 2020. "Exploration in ash-deposition (AD) behavior modification of low-rank coal by manure addition," Energy, Elsevier, vol. 208(C).
    4. Barbara Bielowicz & Rafał Morga, 2021. "Micro-Raman Spectroscopy of Selected Macerals of the Huminite Group: An Example from the Szczerców Lignite Deposit (Central Poland)," Energies, MDPI, vol. 14(2), pages 1-18, January.
    5. Aragón-Briceño, C.I. & Pozarlik, A.K. & Bramer, E.A. & Niedzwiecki, Lukasz & Pawlak-Kruczek, H. & Brem, G., 2021. "Hydrothermal carbonization of wet biomass from nitrogen and phosphorus approach: A review," Renewable Energy, Elsevier, vol. 171(C), pages 401-415.
    6. Ozdemir, Saim & Şimşek, Aslı & Ozdemir, Serkan & Dede, Cemile, 2022. "Investigation of poultry slaughterhouse waste stream to produce bio-fuel for internal utilization," Renewable Energy, Elsevier, vol. 190(C), pages 274-282.
    7. Jiang, Xu & Xu, Jun & He, Qichen & Wang, Cong & Jiang, Long & Xu, Kai & Wang, Yi & Su, Sheng & Hu, Song & Du, Zhenyi & Xiang, Jun, 2023. "A study of the relationships between coal heterogeneous chemical structure and pyrolysis behaviours: Mechanism and predicting model," Energy, Elsevier, vol. 282(C).
    8. Liu, Hui & Liu, Jingyong & Huang, Hongyi & Evrendilek, Fatih & Wen, Shaoting & Li, Weixin, 2021. "Optimizing bioenergy and by-product outputs from durian shell pyrolysis," Renewable Energy, Elsevier, vol. 164(C), pages 407-418.
    9. Eunhye Song & Ho Kim & Kyung Woo Kim & Young-Man Yoon, 2023. "Characteristic Evaluation of Different Carbonization Processes for Hydrochar, Torrefied Char, and Biochar Produced from Cattle Manure," Energies, MDPI, vol. 16(7), pages 1-14, April.
    10. Zhang, Zhiqing & Duan, Hanqi & Zhang, Youjun & Guo, Xiaojuan & Yu, Xi & Zhang, Xingguang & Rahman, Md. Maksudur & Cai, Junmeng, 2020. "Investigation of kinetic compensation effect in lignocellulosic biomass torrefaction: Kinetic and thermodynamic analyses," Energy, Elsevier, vol. 207(C).
    11. Zhang, Zhiyi & Li, Yingkai & Luo, Laipeng & Yellezuome, Dominic & Rahman, Md Maksudur & Zou, Jianfeng & Hu, Hangli & Cai, Junmeng, 2023. "Insight into kinetic and Thermodynamic Analysis methods for lignocellulosic biomass pyrolysis," Renewable Energy, Elsevier, vol. 202(C), pages 154-171.
    12. Chen, Zhiyun & Chen, Huashan & Wu, Xieyuan & Zhang, Junhui & Evrendilek, Deniz Eren & Liu, Jingyong & Liang, Guanjie & Li, Weixin, 2021. "Temperature- and heating rate-dependent pyrolysis mechanisms and emissions of Chinese medicine residues and numerical reconstruction and optimization of their non-linear dynamics," Renewable Energy, Elsevier, vol. 164(C), pages 1408-1423.
    13. Wen, Shaoting & Yan, Youping & Liu, Jingyong & Buyukada, Musa & Evrendilek, Fatih, 2019. "Pyrolysis performance, kinetic, thermodynamic, product and joint optimization analyses of incense sticks in N2 and CO2 atmospheres," Renewable Energy, Elsevier, vol. 141(C), pages 814-827.
    14. Sun, Ce & Li, Wenlong & Chen, Xiaojian & Li, Changxin & Tan, Haiyan & Zhang, Yanhua, 2021. "Synergistic interactions for saving energy and promoting the co-pyrolysis of polylactic acid and wood flour," Renewable Energy, Elsevier, vol. 171(C), pages 254-265.
    15. Atimtay, Aysel & Yurdakul, Sema, 2020. "Combustion and Co-Combustion characteristics of torrefied poultry litter with lignite," Renewable Energy, Elsevier, vol. 148(C), pages 1292-1301.
    16. Tariq, Rumaisa & Mohd Zaifullizan, Yasmin & Salema, Arshad Adam & Abdulatif, Atiqah & Ken, Loke Shun, 2022. "Co-pyrolysis and co-combustion of orange peel and biomass blends: Kinetics, thermodynamic, and ANN application," Renewable Energy, Elsevier, vol. 198(C), pages 399-414.
    17. Zhu, Shujun & Hui, Jicheng & Lyu, Qinggang & Ouyang, Ziqu & Zeng, Xiongwei & Zhu, Jianguo & Liu, Jingzhang & Cao, Xiaoyang & Zhang, Xiaoyu & Ding, Hongliang & Liu, Yuhua, 2023. "Experimental study on pulverized coal swirl-opposed combustion preheated by a circulating fluidized bed. Part A. Wide-load operation and low-NOx emission characteristics," Energy, Elsevier, vol. 284(C).
    18. Zhang, Xin & Deng, Honghu & Hou, Xueyi & Qiu, Rongliang & Chen, Zhihua, 2019. "Pyrolytic behavior and kinetic of wood sawdust at isothermal and non-isothermal conditions," Renewable Energy, Elsevier, vol. 142(C), pages 284-294.
    19. Zhang, Deli & Sun, Zhijing & Fu, Hongyue & Liu, Zhenfei & Wang, Fang & Zeng, Jianfei & Yi, Weiming, 2024. "Upgrading of cow manure by hydrothermal carbonization: Evaluation of fuel properties, combustion behaviors and kinetics," Renewable Energy, Elsevier, vol. 225(C).
    20. Qiao, Yanyu & Chen, Zhichao & Wu, Xiaolan & Li, Zhengqi, 2023. "Effect of demineralization on waste tire pyrolysis char physical, chemical characteristics and combustion characteristics," Energy, Elsevier, vol. 284(C).

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:251:y:2022:i:c:s0360544222008337. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.